Prolonged exposure to high levels of infrared radiation could lead to burns and cause eye problems, including cornea and retina damage, cataracts and injuries to the eye lens. In addition, infrared radiation can cause pain to the skin of a person in close contact with it.Know More
Most infrared radiation is not visible and may affect a person without his knowledge. Similarly, some radiation is neither hot nor colored, making them difficult for people to detect and avoid.
In the electromagnetic spectrum, infrared rays are just below visible red light. Many objects, including lamps, flames, stars and other warm items, emit these rays. They are most commonly used in mobile phones, in remote controls for TV sets and in other short-range communication devices. In addition, physiotherapists use infrared technology to help the healing of athletes' injuries.
Modern weapons have infrared detectors that are designed to spot targets, particularly at night. Although occasional exposure to these rays is not enough to cause danger, everyday contact can cause long-term health problems. Employees working for companies involved in the mass production of lasers and heat lamps have a higher risk of experiencing adverse effects due to exposure. These rays can disrupt body cells, penetrate DNA and cause cancer. Those who are vulnerable are advised to wear protective gear.Learn More
How Stuff Works explains that sound travels in mechanical waves, and these waves are disturbances that cause energy to move. The energy is then transported through a medium. Disturbances occur when an object vibrates. This vibration is caused by interconnected and interactive particles.Full Answer >
Light travels through a vacuum at 186,282 miles per second; through the Earth's atmosphere, it moves at 186,227 miles per second. The speed of light, in general, is affected by the medium through which it moves.Full Answer >
A converging lens is a lens curved on both sides with its center thicker than the edges. It is also commonly known as a convex lens.Full Answer >
Radio waves are able to wirelessly carry important information almost instantaneously and, aside from just transmitting audio and television signals, they make cell phones, global positioning systems and space communication possible. Radio wave technology has allowed for significantly faster and easier communication and navigation.Full Answer >